CVE-2026-10650
Deferred Deferred - Pending Action
Resource Consumption in libwebsockets SSH Protocol Handler

Publication date: 2026-06-02

Last updated on: 2026-06-02

Assigner: VulDB

Description
A flaw has been found in warmcat libwebsockets up to 4.5.8. This issue affects the function lws_ssh_parse_plaintext of the file plugins/protocol_lws_ssh_base/sshd.c of the component SSH Protocol Handler. Executing a manipulation of the argument msg_len can lead to resource consumption. The attack may be launched remotely. The exploit has been published and may be used. This patch is called 3f9f0c6ecaf0e6f3f219d30632c5d1f2479d7498. A patch should be applied to remediate this issue.
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Meta Information
Published
2026-06-02
Last Modified
2026-06-02
Generated
2026-06-24
AI Q&A
2026-06-03
EPSS Evaluated
2026-06-22
NVD
CVE-2026-10650
EUVD
EUVD-2026-34034
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
warmcat libwebsockets to 4.5.8 (inc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-404 The product does not release or incorrectly releases a resource before it is made available for re-use.
CWE-400 The product does not properly control the allocation and maintenance of a limited resource.
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Executive Summary

This vulnerability is a flaw in the warmcat libwebsockets library up to version 4.5.8, specifically in the SSH Protocol Handler component. It affects the function lws_ssh_parse_plaintext in the file plugins/protocol_lws_ssh_base/sshd.c. By manipulating the argument msg_len, an attacker can cause excessive resource consumption. The attack can be launched remotely, and an exploit for this vulnerability has been published.

A patch identified as 3f9f0c6ecaf0e6f3f219d30632c5d1f2479d7498 is available to fix this issue.

Impact Analysis

This vulnerability can lead to resource consumption on the affected system, which may degrade performance or cause denial of service conditions. Since the attack can be performed remotely without authentication, it poses a risk of disrupting services that rely on the vulnerable libwebsockets SSH Protocol Handler.

Mitigation Strategies

To mitigate this vulnerability, you should apply the patch identified as 3f9f0c6ecaf0e6f3f219d30632c5d1f2479d7498 to the affected libwebsockets component.

This patch addresses the flaw in the lws_ssh_parse_plaintext function of the SSH Protocol Handler, preventing resource consumption attacks.

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